Cast low alloy bainite wear resistant steel excavator shovel teeth
Most of the shovel teeth of roadheader work in the environment of high impact, high wear and high hardness, so […]
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steel casting
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Sand casting of steel castings for excavator rear axle housing
The design of sand casting process plays a key role in the quality of castings. The traditional process design of
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Testing method of steel castings
1) For small and medium-sized castings (especially investment precision castings), they have small volume, light weight and less processing capacity.
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Numerical simulation of solidification process in lost foam casting of cast steel valve body
The figure shows the solidification of cast steel valve body castings at different times. It can be seen from the
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Ordinary high manganese steel (ZGMn13)
High manganese steel, also known as Hadfield steel, was invented by Robert Hadfield in 1882. Ordinary high manganese steel is
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Causes and preventive measures of sand sticking casting defects of cast steel bucket teeth
Compared with cast iron, the pouring temperature of cast steel is higher, which is more than 1560 ~ 1620 ℃
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Difficulties in testing steel castings
1.Poor ultrasonic penetration The complex interface of coarse grain and uneven structure enhances the scattering of ultrasonic wave, and the
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Numerical simulation and analysis of mold filling process in lost foam casting of cast steel valve body
For example, the liquid filling state of the casting at different times is represented. The red represents the molten metal
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Types of sand sticking casting defects of cast steel bucket teeth
At present, the manufacturing processes of bucket teeth of excavators in China are sand casting, forging and precision casting. In
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Common casting defects of steel castings
Although the casting defects produced in the casting process of steel castings are similar to those produced by ingot casting,
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Production of steel castings
(1) Melting of cast steel. Cast steel must be melted in electric furnace, mainly electric arc furnace and induction furnace.
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Classification of steel castings
Cast steel refers to the steel specially used for manufacturing steel castings. When the strength requirements of castings are high
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Application of steel castings
Due to the characteristics of steel castings, almost all industrial departments need steel castings, which are widely used in ships
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Advantages of steel castings
1.Greater design flexibility This design has the greatest freedom to choose the shape and size of castings, especially complex shapes
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Advantages and disadvantages of steel castings
Steel castings refer to parts made of cast steel, which have similar properties to cast iron, but better strength than
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Verification of lost foam casting process for axle housing of cast steel engineering
After trial production for many times, a set of skills of white mold burning empty shell of stmma bridge shell
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Selection of foam bead and coating for lost foam casting of axle housing for steel casting
Due to the structural characteristics of the axle housing, the spiral case opening can only be placed upward and horizontally.
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Control of molten steel quality to reduce sand hole and air hole defects of large steel castings
The market has higher and higher requirements for the quality of large and medium-sized steel castings. The castings requiring ultrasonic
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Control of water glass to reduce sand hole and air hole defects of large steel castings
1. Quality control of sodium silicate. “Modulus, concentration” and “guest salt” (NaCI, Na2SO4, Na2CO3, etc.) are important parameters of sodium
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Main factors for reducing sand hole and air hole defects of large steel castings and quality improvement scheme
1.How to control the pouring temperature? Since lowering the pouring temperature has so many advantages, how can we ensure smooth
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Reducing pouring “temperature” to reduce sand hole and air hole defects of large steel castings
Reducing pouring “temperature” to reduce sand hole and air hole defects of large steel castings Reducing the pouring “temperature” is
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Reduce sand hole and air hole defects of large steel castings
How to overcome the shortcomings of quartz sand and significantly reduce the sand holes and pores of large and medium-sized
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Control of pouring and solidification process of large steel castings
“Pouring and solidification process” is a key process that has a significant impact on the quality of steel castings. More
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Computer simulation technology in the production of China large steel castings
Large steel castings have large size and long production cycle. They are generally produced in small batch or even single
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Heat treatment technology in the production of China large steel castings
After pouring of large steel castings, there are great differences in the cooling rates of different parts, appearance and core
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Casting technology in the production of China large steel castings
Large castings have long production cycle and complex processes. Generally, they have to go through many processes. Reasonable setting of
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Metal material smelting technology in the production of large steel castings
Large steel castings in the fields of nuclear power, hydropower, thermal power and metallurgical equipment have strict service conditions and
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The gap between China’s large steel casting production enterprises and foreign advanced enterprises
Compared with industrial developed countries, there is a big gap in the production of large steel castings in China in
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Current situation of large steel casting production enterprises in China
There are more than 30 large-scale casting production enterprises in China, most of which are large and medium-sized state-owned enterprises.
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Development trend of China steel casting industry in the next few years
1.With the expansion and transformation of some steel casting industries and the large investment and construction of local private enterprises,